Blank Page issue with AD auth via LDAP Auth extension

I am having the same issue with MediaWiki v1.27.1 running in IIS on Windows 2012 R2. I downloaded and untar'd the file to C:\inetpub\wwwroot\mediawiki\extensions\LdapAuthentication. The moment I uncomment the code below, all of the MediaWiki pages won't load and stay blank (white). I even ran php maintenance/update.php after making the changes to no avail. Thoughts? Is something up with my config? See below. I have to comment out all of the LDAP-related text below for any of the MediaWiki pages to load again.

# Enabled extensions. Most of the extensions are enabled by adding

# wfLoadExtensions('ExtensionName');

# to LocalSettings.php. Check specific extension documentation for more details.

Https

1) after turning on https by default for anonymous readers, will they have a way to use the usual http at desktop view? For example, readers can use compressive Google and Opera servers - they will no longer be able to use them?

2) mobile version will also be https by default?

3) beta testing program will still work? have any plans for the time of the beginning of beta? If a separate wiki has a consensus for inclusion https by default now, you can do it now?

4) If not, what do you think about the inclusion of https now through a script in MediaWiki:Common.js in a separate langeage X.wikipedia.org?